Final answer:
The size of the sub feed to feed the trailer panel should be able to handle at least 12,050 watts of power.
Step-by-step explanation:
To determine the size of the sub feed to feed the trailer panel, we need to calculate the total power consumption of the lighting, small utilization equipment, heater, exhaust fan, and range. From the given information, we have:
- Lighting and small utilization equipment: 3,750 VA
- Heater: 900 VA at 240 volts
- Exhaust fan: 400 VA at 120 volts
- Range: 7,000 VA at 240 volts
To calculate the total power consumption, we convert the volt-amperes (VA) to watts (W) and then sum them up. The sub feed size would need to be able to supply this total power consumption.
Let's calculate the power consumption:
- Lighting and small utilization equipment: 3,750 VA → 3,750 W
- Heater: 900 VA at 240 volts → 900 W
- Exhaust fan: 400 VA at 120 volts → 400 W
- Range: 7,000 VA at 240 volts → 7,000 W
Total Power Consumption: 3,750 W + 900 W + 400 W + 7,000 W = 12,050 W
Therefore, the size of the sub feed to feed the trailer panel should be able to handle at least 12,050 watts of power.